Apparatus for removing foreign matter from india-rubber, gutta-percha, balata, and the like.



M. M. DESSAU.

APPARATUS FOR REMOVING FOREIGN MATTER FROM INDIA RUBBER, GUTTA PERCHA. BALATA, AND THE LIKE.

APPLICATION FILED NOV. 23, 1909.

960,846. Patented June 7, 1910.

2 SHEETS-SHEET 1.

E mullin 7a M. M. DESSAU.

APPARATUS FOR REMOVING FOREIGN MATTER FROM-INDIA RUBBER, GUTTA PERGHA,

- BALATA, AND THE LIKE.

APPLICATION IILED 1IOV. 23, 1909.

960,846. Patented June 7, 1910.

2 SHEETS-SHEET 2.

UNITED STATES PATENT-OFFICE.

'MQRLAN vficHo L DES-SAU. or LONDON; ENGLAND,

APPARATUS son REMOVING FOREIGN MATTER r'noivr imam-RUBBER. G'UTTA-PERCHA,

- 'BAL'ATA, AND THE LIKE.

Specification'of Letters Patent. Patented June 7, 1910;

Application filed November 23, 1909. Serial No. 529.564.

Be it known that I, MonLaNn l\[ICIIOLL, Dnssau, a. citizen of the United States of Z America. residing in the county of London, i *Ingland, have invented Improvements in} Means or Apparatus for Removing I oreigni Matter from Twila-Rubber. (lutta-lercl1a,

llalata, and the Like. of which the'following is a specification. i This invention relates to improvements 111 l the removal of foreign matter from crude i liquid. whereby the impurities are either libreduee the time occupied in removing thep the india rubber to the rolls. For thispur- 'tates the blocks or pieces aforesaid as to osindia rubber. gutta pereha. balat-a and the 5 like. (hereinafter included in the termindia 1 rubber) lrvsnhjecting the same tothe action =1 of rolls in the presence of water or other i erated or washed out.

The OllJGClL of-the present invention is to impurities and to simplify the feeding of pose the india rubber is fed to the rolls under the continuously applied pressure of a rockable platen. movement ofwhich causes the washing water or liquid to surge in such manner that the impurities are. rapidly washed out and removed with the overflow water or liquid while suspended therein.

The accompanying drawings illustratea machine according to the present invention intended for use with water, Figure 1 being an elevation partly in section on the line A A of Fig. '2. and Fig. 2 an elevation, also partly in section, on the line-B B of Fig. 1.

As there shown, each roll a is formed with a series of sinuous crests b andronsequent intervening indentations 0, constituting a highly roughened or toothed surface which experiment has shown not only more effectually deforms the blocks or pieces of crude indi'a rubber (Z than hitherto, as they pass between the rolls, so as to open out the india rubber and liberate solid impurities, such as stones and sand, thercfrom. but also so agieillate the platen or plunger to be hereinafter described and produce a surging action'of the water on its way to the trough 6 so that the impurities or lighter impurities are not allowed to settle in the trough as formerly, or not to so great an extent, but are caused to move with the overflow water in the. d1- rection of the arrows (Fig; 1) for removal at he gutters f. Any impurities not so removed but collecting in the bottom ofthe trough (below the rolls a can be discharged from time to tune, as heretofore, through, a

discharge valve e.

Perforated sereei'is, as ordinarily; ar'eiai' ranged at y to prevent. the rubber .(Z which has passed the rolls, entering the trough c, which rubber isearried around by the rolls to be again operated upon.

The feeding of the blocks or pieces of crude india rubber under pressure to. the 6-5 rolls is ettected by means of aplaten or plunger /1 which is jointed at i to the lower extremity of a screwed spindle j that can be adjusted vertically .by the hand wheel 1',

and gearing m, the joint at i'bei'ng such as to allow the platen It to oseillateabout the same and accommodate itself. to a limited extent. to variation in level of therubberii lengthwise of the rolls a, that is 'to say. the axis of the joint is arranged transversely to the said rolls. The spindle j and'operating flneclianism 7., m are shown as carried by a frame n. from the top of the'machine, and the platen or plunger [1 is shown in its preferred form in which its underside is provided with ridges it arranged to approach the curved surfaces of the rolls a; and assist in guiding the rubber'over and between the rolls. In other respects the machine is or may bethc same as formerly constructed. =As will be obvious, the platen or plunger It may be of any other desired contour or shape in cross section, so as to provide an uneven or a fiat surface at the underside as may be required.

The platen or plan or h also may be perfo- 99 rated, 'as-shown-at L2 and maybe provided at its edges with strips h of'india rubber fitting the sides of the trough 6, so as to confine the rubber while at the same time permitting a rise and fall of the platen or plunin guard casings 'r, from a driving-shaft '8 provided with fast and loosepulleys t and u respectively. p The invention can be applied in connec v tion with-'riihber washing machines of various constructions.

lihat I claim is I;

1. 'A machine for separatin 'foreign matter from 'indiaru-bber, comprlsin a liquid container, a pair of laeeratmg ro lls therein arranged to rotate about parallehaig s inQ-a substantially horizontal plane so that 'the indiarubber being treated can pass vertically downward between their peripheries, and a platen p'ivot'ally supported above the rolls "so that it can oscillate aboutan axis trans- .sure to the indiarubber, a support for the platen having a joint with its axis arranged transversely to-the rolls for enabling the platen to oscillate and produce a surging of liquid in "the container, and means for advancing the platen support toward and withdrawing the same from the rolls.

. 3. A machine for separating foreign mat ter from indiarubber comprising a liquid container, screens dividing the container into-a central and side compartments, a pair of lacerating rolls in .the central compartproduce a surgmg of ment arranged to' rotate about parallel axes in a substantially horizontal plane so that the indiarubber can pass vertically down ward between their peripheries, a platen adapted to continuously apply pressure to the indiarubber, a support for the platen having a joint with its axis arranged transversely to the rolls, enabling the platen to oscillate and produce a surging of liquid through the screens into the side compartments of the-container, and overflow gutters for conducting liquid from the said side compartments.

4. A machine for separating foreign mat ter from india rubber, comprising a trough, screens dividing the-trough into a central and side compartments, laeerating rolls having highly roughened surfaces arranged in the said central compartment, overflow gut- .ters for the side compartments, a platen adapted to oscillate and to act upon mdiarubber placed in the central compartment upon the rolls, and means for rotating the rolls in opposite directions so that themdla rubber is caused to repeatedly pass through the rolls and in so doing oscillate the platen to produce a surging of liquid fed into the trough, from the central compartment to the side compartments through'the screens for the purpose set forth.

Signed at London, England this 12th day of November 1909.

Mon-Lat n 'MIoHoLL nnssau.

. 'Witnesses:

F L. Ralsny H. D. J AMEsoN. 

